EP 2801835 A4 20150909 - MEASUREMENT METHOD AND MEASUREMENT DEVICE

Title (en)

MEASUREMENT METHOD AND MEASUREMENT DEVICE

Title (de)

MESSVERFAHREN UND MESSVORRICHTUNG

Title (fr)

PROCÉDÉ ET DISPOSITIF DE MESURE

Publication

EP 2801835 A4 20150909 (EN)

Application

EP 12862338 A 20121226

Priority

JP 2011282858 A 20111226
JP 2012082405 A 20120330
JP 2012082416 A 20120330
JP 2012082425 A 20120330
JP 2012082451 A 20120330
JP 2012083724 W 20121226

Abstract (en)

[origin: EP2801835A1] A charge potential distributed over a vehicle body (2A) resulting from the contact, separation, and friction between a tire (2B) and a road surface (3) is detected by a detecting unit (10) provided with a sensing electrode (11) that is disposed on the external surface of the vehicle body (2A), a reference electrode (12) that is disposed apart from the external surface of the vehicle body (2A) with a space therebetween, and a sensor amplifier (13) that senses a potential between the sensing electrode (11) and the reference electrode (13) as a signal and amplifies the signal. And the amplitude of the charge potential detected by the detecting unit (10) is monitored by a data processing unit (20), thereby making it possible to accurately identify not only the state of the road surface but also an internal pressure state of the tire, a wear state of the tire, and the like during vehicular travel.

IPC 8 full level

G01R 29/12 (2006.01); B60T 8/172 (2006.01); G01B 7/00 (2006.01); G01L 17/00 (2006.01); G01M 17/02 (2006.01); G01N 19/02 (2006.01); G01N 27/00 (2006.01); G01R 29/24 (2006.01); G01W 1/00 (2006.01)

CPC (source: EP US)

B60T 8/172 (2013.01 - EP US); G01L 17/00 (2013.01 - EP US); G01M 17/02 (2013.01 - EP US); G01N 19/02 (2013.01 - US); G01N 27/221 (2013.01 - EP US); G01N 27/60 (2013.01 - US); G01R 29/12 (2013.01 - EP US); G01R 29/24 (2013.01 - US); B60T 2210/12 (2013.01 - EP US)

Citation (search report)

[XAI] WO 2004002758 A1 20040108 - PIRELLI [IT], et al
[X] DE 19953488 C1 20010510 - CONTINENTAL AG [DE]
[X] US 2009056433 A1 20090305 - KVISTEROEY TERJE [DE], et al
[A] US 3676769 A 19720711 - LOEPFE ERICH
See references of WO 2013099984A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2801835 A1 20141112; EP 2801835 A4 20150909; EP 2801835 B1 20190724; CN 104136930 A 20141105; CN 104136930 B 20170426; US 2014350879 A1 20141127; US 9772361 B2 20170926; WO 2013099984 A1 20130704

DOCDB simple family (application)

EP 12862338 A 20121226; CN 201280070629 A 20121226; JP 2012083724 W 20121226; US 201214368357 A 20121226